Siemens – 3RN1062‑1CW00 – Thermistor Motor Protection Relay

The Siemens 3RN1062‑1CW00 is a thermistor-based motor protection relay, designed to monitor up to six sensor circuits in multi-motor setups. With SPDT auxiliary contacts and automatic reset features, it provides enhanced thermal protection and malfunctions recording for industrial motor applications.

Key Features:

• Model: 3RN1062‑1CW00

• Function: Motor thermistor protection for up to 6 PTC sensor circuits; includes 1 NO + 1 NC auxiliary contact  

• Supply Voltage: 24 – 240 V AC/DC, 50/60 Hz

• Measurable Sensing Temperature: 60 – 180 °C  

• Reset Options: Automatic self-reset, external reset, and reclosing interlock  

• Defect Memory: Retains fault conditions until manually cleared  

• Sensor Channels: 6 independent thermistor inputs  

• Connection Type: Screw terminals (no plug socket)

• Indicators: LED for power and trip status

• Environmental Range: –25 °C to +60 °C; IP20 housing  

• Dimensions: 45 × 106 × 91 mm; approx. 0.273 kg